US3568849A - Toolholding devices - Google Patents

Toolholding devices Download PDF

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Publication number
US3568849A
US3568849A US791934*A US3568849DA US3568849A US 3568849 A US3568849 A US 3568849A US 3568849D A US3568849D A US 3568849DA US 3568849 A US3568849 A US 3568849A
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United States
Prior art keywords
tool
cylindrical
toolholder
pins
magazine
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US791934*A
Inventor
James M Hutchison
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INTERTEC LE QUINTIN A CORP OF FRANCE Ste
Original Assignee
Molins Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Assigned to MOLINS LIMITED reassignment MOLINS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MOLINS MACHINE COMPANY LIMITED
Assigned to SOCIETE INTERTEC, LE QUINTIN, A CORP OF FRANCE reassignment SOCIETE INTERTEC, LE QUINTIN, A CORP OF FRANCE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MOLINS LIMITED
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/15526—Storage devices; Drive mechanisms therefor
    • B23Q3/15536—Non-rotary fixed racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/15526—Storage devices; Drive mechanisms therefor
    • B23Q2003/15527—Storage devices; Drive mechanisms therefor the storage device including means to latch tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17786—Spring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/18—Tool transfer to or from matrix
    • Y10T483/1809—Matrix including means to latch tool

Definitions

  • ABSTRACT A cutting tool is held in a carrier having a circumferential groove.
  • the tool and the carrier are retained in an annular member by means of pin elements in the annular member which are spring loaded inwards into the groove.
  • a plurality of such annular members are carried in a tool magazine.
  • tool is intended to mean not only the actual cutting tool itself .but also such a tool together with a carrier in which the tool is carried both in the magazine and in the spindle.
  • a carrier in which the tool is carried both in the magazine and in the spindle.
  • a toolholding device comprising a first part in the form of an annular member adapted to receive a second part on a tool to be held, an elementhoused in one of the parts and adapted to engage in a recess in the other part to retain the tool in the annular member, and resilient means to urge the element in the direction to engage in the recess.
  • the recess may be provided on the tool carrier.
  • a plurality of spring-loaded elements are provided toengage insaid recess and thereby retain the tool in said member.
  • the tool can be inserted axially into said member, said element or elements being urged against the action of the resilient means until said recess registers with said element or elements whereupon the element or elements, urged by said resilient means,,engage in said recess to retain the tool in the member.
  • the tool can be withdrawn axially from said member, the surface defining said recess coacting with said element or elements to force the element or elements outwardly thereby to release the tool.
  • a plurality of such toolholding devices may be provided on a tool magazine.
  • FIG. 1 is a plan view of a tool magazine
  • FIG. 2 is a plan view of part of the tool magazine of FIG. 1 to a larger scale
  • a FIG. 3 is a sectional view on the line 14 III -III of FIG. 2.
  • a tool magazinel has a base 1A and two projecting parts 2 in each of which are provided four holes 3. There are also other holes 3A in the base 1A.
  • An annular toolholding member 4 has a lower cylindrical part which is shown fitted into one of the holes 3 and retained therein by a grub screw 5 threaded through the part 2 and engaging in a V-groove 6 in the periphery of the member 4.
  • the upper portion of the member 4 has an internal cylindrical surface 7 from which four pins 8,, housed in the member 4, are urged to project by a spring 9 of polygonal form.
  • the spring 9 surrounds the member 4 and is located in a slot in the head of each pin 8 to urge the pin inwardly, the ends 10 of the spring being bent inwardly to locate in a hole 11 in the member 4.
  • a tool to be held in the magazine comprises a shank portion 12, a cutting portion 13, and a projecting disc portion I4 of greater diameter than the cutting portion 13.
  • the disc portion 14 has a peripheral groove 15 in which the pins 8 can engage, the diameter of the disc portion 14 being slightly less than that of the hole defined by the cylindrical surface 7 so that the disc can be received in the hole.
  • the upper and lower edges of the disc portion 14 are chamfered.
  • The: diameter of the cutting portion 13 of the tool is slightly less than that of a hole 16 in the lower part of the member 4 so that the cutting portion can be received in the hole.
  • the magazine 1 has a hole 17 below the hole 16 and has a recess 18 in its base. 7
  • the tool is inserted axially into the holding member 4 and as the lower chamfered edge of the disc portion 14 engages the inwardly projecting pins 8, the pins are forced outwardly against the action of the spring 9 andare held out until the groove 15 registers with the pins.
  • the pins under the spring action, then locate in the groove to retain the tool in the holder with its shank portion 12 projecting therefrom.
  • its shank portion 12 is gripped and moved upwardly, as viewed in FIG. 3, whereupon the surface defining the groove 15 coacts with the ends of the pins 8 to force the pins outwardly, thereby enabling the tool to be withdrawn.
  • the magazine 1 as shown in FIG. 1 has only the one toolholder 4 and tool inserted in one of the holes 3. It will be appreciated that, in practice, the other holes 3 will also carry a toolholder and tool.
  • the other holes 3A are also stepped to have a smaller diameter portion 17A and will contain similar toolholders and tools with longer shanks.
  • the internal diameters and proportions of the toolholders may vary to accommodate tools with different size cutting portions.
  • a toolholding device as described above with reference to the accompanying drawing can advantageously be used with a numerically controlled machine tool as described in the firstmentioned specification.
  • a tool magazine comprising means defining a plurality of cylindrical apertures, an externally stepped cylindrical toolholder having a lower portion inserted in one of the cylindrical apertures of the tool magazine, and an upper and larger diameter portion resting on the edge of the means defining the aperture, the toolholder having an internal stepped cylindrical aperture with a cutting tool received therein, the tool having a cylindrical portion of greater diameter than its cutting portion, the aperture in the toolholder having a.
  • the cylindrical portion of the tool having a circumferential recess therein, a plurality of radial pins passing through the toolholder, the outer ends of the pins each having a horizontal slot, a polygonal wire spring embracing the pins and passing through each of the slots to urge the pins radially inwards to engage in the circumferential recess in the cylindrical portion of said tool, the spring having two ends facing radially inwards and each inserted in a radial retaining hole in the toolholder.

Abstract

A cutting tool is held in a carrier having a circumferential groove. The tool and the carrier are retained in an annular member by means of pin elements in the annular member which are spring loaded inwards into the groove. A plurality of such annular members are carried in a tool magazine.

Description

United States Patent James M. Hutchison Deptford, England Jan. 17, 1969 Mar. 9, 1971 Molins Machine Company Limited London, England Jan. 31, 1968 Great Britain Inventor Appl. No. Filed Patented Assignee Priority TOOLHOLDING DEVICES 1 Claim, 3 Drawing Figs.
[1.8. CI 211/60, 29/568, 279/79 Int. Cl. B23q 13/00 Field ofSearch 21 1/60 (T), 60, 69, 62 (U.S.), 69.5, 69.8, 1.5 (Last Foreign), 8 (Last U.S.); 248/314; 206/17, 17.5; 29/568;
269/16; 306/(Inquired); 285/345; 287/126 (last 2 U.S.); 279/123 (P), 24, 76, 97 (U.S.)
[56] References Cited UNITED STATES PATENTS 2,320,360 6/1943 Grey 279/79 2,650,570 9/1953 Voelcker 211/695 3,191,260 6/1965 Jorgensen.... 29/568UX 3,286,344 11/1966 Brainard 21 l/1.5UX 3,431,635 3/1969 Balding 29/568 FOREIGN PATENTS 269,582 7/1950 Switzerland 279/76 Primary Examiner-Roy D. Frazier Assistant Examiner-Abraham Frankel Attorney-Emory L. Graff & Emory-l... Graff, Jr.
ABSTRACT: A cutting tool is held in a carrier having a circumferential groove. The tool and the carrier are retained in an annular member by means of pin elements in the annular member which are spring loaded inwards into the groove. A plurality of such annular members are carried in a tool magazine.
TOOLHOLDING DEVICES This invention concerns improvements in or relating to toolholding devices. '1
In U.S. Pat. Nos. RE25,956 and 3,241,451 there is disclosed an arrangement for changing the cutting tool in the spindle of a numerically controlled machine tool wherein the spindle is aligned with a selected position in a tool magazine and withdraws a tool therefrom, and after such tool has been used for machining, is realigned with said selected position to replace the tool in the magazine, and is then aligned with a further selected position in the magazine to receive a further too. The machine tool spindle grips each tool by its shank, i.e. the end opposed to its cutting end, and each tool is received and held in the magazine by. its cutting end so that the shank end projects from the magazine and can be received by the spindle. With such an arrangement it is necessary that the tools are held in the tool magazine sufficiently firmly to prevent their falling therefrom, but so that they can be removed from and replaced in the tool tool magazine by the spindle. It is further necessary that the tools are held in the magazine so that their projecting shanks are positioned with sufficient accuracy to enable the spindle to receive the tools under data control. The tool magazine must therefore be provided with toolholding devices which meet these requirements. I f
In this specification the term tool" is intended to mean not only the actual cutting tool itself .but also such a tool together with a carrier in which the tool is carried both in the magazine and in the spindle. Such an arrangement of tool and tool carrier is disclosed in US. Pat. Application Ser. No. 775,478filed Nov. 13, 1968. v t
According to the present invention there is provided a toolholding device comprising a first part in the form of an annular member adapted to receive a second part on a tool to be held, an elementhoused in one of the parts and adapted to engage in a recess in the other part to retain the tool in the annular member, and resilient means to urge the element in the direction to engage in the recess. Where the tool iscarried in a tool carrier the recess may be provided on the tool carrier. Preferably a plurality of spring-loaded elements are provided toengage insaid recess and thereby retain the tool in said member.
By this arrangement the tool can be inserted axially into said member, said element or elements being urged against the action of the resilient means until said recess registers with said element or elements whereupon the element or elements, urged by said resilient means,,engage in said recess to retain the tool in the member. The tool can be withdrawn axially from said member, the surface defining said recess coacting with said element or elements to force the element or elements outwardly thereby to release the tool.
A plurality of such toolholding devices may be provided on a tool magazine.
A toolholding device in accordance withthe invention will now be described, by way of example, with reference to the accompanying drawing, in which:
FIG. 1 is a plan view of a tool magazine,
FIG. 2 is a plan view of part of the tool magazine of FIG. 1 to a larger scale, and a FIG. 3 is a sectional view on the line 14 III -III of FIG. 2.
A tool magazinel has a base 1A and two projecting parts 2 in each of which are provided four holes 3. There are also other holes 3A in the base 1A. An annular toolholding member 4 has a lower cylindrical part which is shown fitted into one of the holes 3 and retained therein by a grub screw 5 threaded through the part 2 and engaging in a V-groove 6 in the periphery of the member 4.
The upper portion of the member 4 has an internal cylindrical surface 7 from which four pins 8,, housed in the member 4, are urged to project by a spring 9 of polygonal form. The spring 9 surrounds the member 4 and is located in a slot in the head of each pin 8 to urge the pin inwardly, the ends 10 of the spring being bent inwardly to locate in a hole 11 in the member 4.
A tool to be held in the magazine comprises a shank portion 12, a cutting portion 13, and a projecting disc portion I4 of greater diameter than the cutting portion 13. The disc portion 14 has a peripheral groove 15 in which the pins 8 can engage, the diameter of the disc portion 14 being slightly less than that of the hole defined by the cylindrical surface 7 so that the disc can be received in the hole. The upper and lower edges of the disc portion 14 are chamfered. The: diameter of the cutting portion 13 of the tool is slightly less than that of a hole 16 in the lower part of the member 4 so that the cutting portion can be received in the hole. The magazine 1 has a hole 17 below the hole 16 and has a recess 18 in its base. 7
The tool is inserted axially into the holding member 4 and as the lower chamfered edge of the disc portion 14 engages the inwardly projecting pins 8, the pins are forced outwardly against the action of the spring 9 andare held out until the groove 15 registers with the pins. The pins, under the spring action, then locate in the groove to retain the tool in the holder with its shank portion 12 projecting therefrom. When the tool is removed from the holder, its shank portion 12 is gripped and moved upwardly, as viewed in FIG. 3, whereupon the surface defining the groove 15 coacts with the ends of the pins 8 to force the pins outwardly, thereby enabling the tool to be withdrawn.
The magazine 1 as shown in FIG. 1 has only the one toolholder 4 and tool inserted in one of the holes 3. It will be appreciated that, in practice, the other holes 3 will also carry a toolholder and tool.
The other holes 3A are also stepped to have a smaller diameter portion 17A and will contain similar toolholders and tools with longer shanks.
The internal diameters and proportions of the toolholders may vary to accommodate tools with different size cutting portions.
A toolholding device as described above with reference to the accompanying drawing can advantageously be used with a numerically controlled machine tool as described in the firstmentioned specification.
Iclaim: a
1. A tool magazine comprising means defining a plurality of cylindrical apertures, an externally stepped cylindrical toolholder having a lower portion inserted in one of the cylindrical apertures of the tool magazine, and an upper and larger diameter portion resting on the edge of the means defining the aperture, the toolholder having an internal stepped cylindrical aperture with a cutting tool received therein, the tool having a cylindrical portion of greater diameter than its cutting portion, the aperture in the toolholder having a. lower portion receiving the cutting portion of the tool, and an upper and larger diameter portion receiving the saidcylindrical portion of the tool, the cylindrical portion of the tool having a circumferential recess therein, a plurality of radial pins passing through the toolholder, the outer ends of the pins each having a horizontal slot, a polygonal wire spring embracing the pins and passing through each of the slots to urge the pins radially inwards to engage in the circumferential recess in the cylindrical portion of said tool, the spring having two ends facing radially inwards and each inserted in a radial retaining hole in the toolholder.

Claims (1)

1. A tool magazine comprising means defining a plurality of cylindrical apertures, an externally stepped cylindrical toolholder having a lower portion inserted in one of the cylindrical apertures of the tool magazine, and an upper and larger diameter portion resting on the edge of the means defining the aperture, the toolholder having an internal stepped cylindrical aperture with a cutting tool received therein, the tool having a cylindrical portion of greater diameter than its cutting portion, the aperture in the toolholder having a lower portion receiving the cutting portion of the tool, and an upper and larger diameter portion receiving the said cylindrical pOrtion of the tool, the cylindrical portion of the tool having a circumferential recess therein, a plurality of radial pins passing through the toolholder, the outer ends of the pins each having a horizontal slot, a polygonal wire spring embracing the pins and passing through each of the slots to urge the pins radially inwards to engage in the circumferential recess in the cylindrical portion of said tool, the spring having two ends facing radially inwards and each inserted in a radial retaining hole in the toolholder.
US791934*A 1968-01-31 1969-01-17 Toolholding devices Expired - Lifetime US3568849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4909/68A GB1237762A (en) 1968-01-31 1968-01-31 Improvements in or relating to tool-holding devices

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US3568849A true US3568849A (en) 1971-03-09

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DE (1) DE1903499A1 (en)
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GB (1) GB1237762A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452361A (en) * 1981-06-11 1984-06-05 Harris Marshall E Pneumatic tool rack
US4499650A (en) * 1982-06-24 1985-02-19 Kentner B. Wilson Automatic tool changer
US4532693A (en) * 1983-01-17 1985-08-06 Alfing Kessler Sondermaschinen Gmbh Tool exchanging apparatus for a machine tool having a plurality of processing spindles
US4941577A (en) * 1988-07-21 1990-07-17 Space Industries Partnership, L.P. Portable robotic tool rack
US5947880A (en) * 1998-04-29 1999-09-07 Eastman Kodak Company Self-aligning tool holder for use with robotic arms
US5993365A (en) * 1998-03-26 1999-11-30 Eastman Kodak Company Tool attachment and release device for robotic arms
US6416450B2 (en) * 1999-07-28 2002-07-09 Thermwood Corporation Machine tool with improved tool changer means
US6494822B1 (en) * 2000-09-01 2002-12-17 Unova Ip Corp Tool retention mechanism
US20080210649A1 (en) * 2007-01-26 2008-09-04 Peter Faust Storage system for tool holders
US11440150B1 (en) * 2021-06-11 2022-09-13 Shin-Yain Industrial Co., Ltd. Tool holder locking device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3218437A1 (en) * 1982-05-15 1983-11-17 Heyligenstaedt & Co, Werkzeugmaschinenfabrik Gmbh, 6300 Giessen BRACKET FOR A TOOL ON A PALLET
CH648232A5 (en) * 1982-09-01 1985-03-15 Posalux Sa MACHINE TOOL.
DE8531605U1 (en) * 1985-11-08 1987-08-20 Ernst Lenz Kg, 6349 Sinn, De

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2320360A (en) * 1941-11-05 1943-06-01 Teletype Corp Quick-change device
CH269582A (en) * 1948-07-28 1950-07-15 Bueren Ludwig Von Tool with holder and various tools.
US2650570A (en) * 1951-12-03 1953-09-01 Billy N Voelcker Penholder
US3191260A (en) * 1961-07-27 1965-06-29 William H Jorgensen Machine tool turret having multiple tools
US3286344A (en) * 1965-03-01 1966-11-22 Kearney & Trecker Corp Machine tool with a tool changer
US3431635A (en) * 1966-03-08 1969-03-11 Victor Horace Balding Tool engaging device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2320360A (en) * 1941-11-05 1943-06-01 Teletype Corp Quick-change device
CH269582A (en) * 1948-07-28 1950-07-15 Bueren Ludwig Von Tool with holder and various tools.
US2650570A (en) * 1951-12-03 1953-09-01 Billy N Voelcker Penholder
US3191260A (en) * 1961-07-27 1965-06-29 William H Jorgensen Machine tool turret having multiple tools
US3286344A (en) * 1965-03-01 1966-11-22 Kearney & Trecker Corp Machine tool with a tool changer
US3431635A (en) * 1966-03-08 1969-03-11 Victor Horace Balding Tool engaging device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452361A (en) * 1981-06-11 1984-06-05 Harris Marshall E Pneumatic tool rack
US4499650A (en) * 1982-06-24 1985-02-19 Kentner B. Wilson Automatic tool changer
US4532693A (en) * 1983-01-17 1985-08-06 Alfing Kessler Sondermaschinen Gmbh Tool exchanging apparatus for a machine tool having a plurality of processing spindles
US4941577A (en) * 1988-07-21 1990-07-17 Space Industries Partnership, L.P. Portable robotic tool rack
US5993365A (en) * 1998-03-26 1999-11-30 Eastman Kodak Company Tool attachment and release device for robotic arms
US5947880A (en) * 1998-04-29 1999-09-07 Eastman Kodak Company Self-aligning tool holder for use with robotic arms
US6416450B2 (en) * 1999-07-28 2002-07-09 Thermwood Corporation Machine tool with improved tool changer means
US6494822B1 (en) * 2000-09-01 2002-12-17 Unova Ip Corp Tool retention mechanism
US20080210649A1 (en) * 2007-01-26 2008-09-04 Peter Faust Storage system for tool holders
US8221297B2 (en) * 2007-01-26 2012-07-17 Faust Solutions Ltd. Storage system for tool holders
US11440150B1 (en) * 2021-06-11 2022-09-13 Shin-Yain Industrial Co., Ltd. Tool holder locking device

Also Published As

Publication number Publication date
FR2001007A1 (en) 1969-09-19
GB1237762A (en) 1971-06-30
DE1903499A1 (en) 1970-08-27

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AS Assignment

Owner name: SOCIETE INTERTEC, LE QUINTIN, ZONE INDUSTRIELLE, 1

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MOLINS LIMITED;REEL/FRAME:004404/0701

Effective date: 19801223